| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Giagka, Vasiliki
Fraunhofer Institute for Reliability and Microintegration
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Non-monolithic fabrication of thin-film microelectrode arrays on PMUT transducers as a bimodal neuroscientific investigation toolcitations
- 2023Non-monolithic fabrication of thin-film microelectrode arrays on PMUT transducers as a bimodal neuroscientific investigation toolcitations
- 2023A Comparative Study of Si3N4 and Al2O3 as Dielectric Materials for Pre-Charged Collapse-Mode CMUTscitations
- 2023An Ultrasonically Powered System Using an AlN PMUT Receiver for Delivering Instantaneous mW-Range DC Power to Biomedical Implantscitations
- 2022Thin Film Encapsulation for LCP-Based Flexible Bioelectronic Implants: Comparison of Different Coating Materials Using Test Methodologies for Life-Time Estimationcitations
- 2022Thin Film Encapsulation for LCP-Based Flexible Bioelectronic Implants: Comparison of Different Coating Materials Using Test Methodologies for Life-Time Estimationcitations
- 2022Multilayer CVD graphene electrodes using a transfer-free process for the next generation of optically transparent and MRI-compatible neural interfacescitations
- 2022Multilayer CVD graphene electrodes using a transfer-free process for the next generation of optically transparent and MRI-compatible neural interfacescitations
- 2022Thin Film Encapsulation for LCP-Based Flexible Bioelectronic Implantscitations
- 2021Silicone encapsulation of thin-film SiOx , SiOx Ny and SiC for modern electronic medical implantscitations
- 2021Silicone encapsulation of thin-film SiO x , SiO x N y and SiC for modern electronic medical implants: A comparative long-term ageing studycitations
- 2021Silicone encapsulation of thin-film SiOx, SiOxNy and SiC for modern electronic medical implants: a comparative long-term ageing studycitations
- 2021Silicone encapsulation of thin-film SiOx, SiOxNy and SiC for modern electronic medical implants
- 2020Soft, flexible and transparent graphene-based active spinal cord implants for optogenetic studies
- 2020Long-term encapsulation of platinum metallization using a HfO2 ALD - PDMS bilayer for non-hermetic active implantscitations
- 2019Effect of Signals on the Encapsulation Performance of Parylene Coated Platinum Tracks for Active Medical Implantscitations
- 2019The influence of soft encapsulation materials on the wireless power transfer links efficiency
- 2019Towards an Active Graphene-PDMS Implant
- 2018MEMS-Electronics Integration 2: A Smart Temperature Sensor for an Organ-on-a-chip Platform
- 2015Flexible active electrode arrays with ASICs that fit inside the rat's spinal canalcitations
Places of action
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document
Effect of Signals on the Encapsulation Performance of Parylene Coated Platinum Tracks for Active Medical Implants
Abstract
Platinum is widely used as the electrode material for implantable devices. Owing to its high biostability and corrosion resistivity, platinum could also be used as the main metallization for tracks in active implants. Towards this goal, in this work we investigate the stability of parylene-coated Pt tracks using passive and active tests. The test samples in this study are Pt-on-SiO 2 interdigitated comb structures. During testing all samples were immersed in saline for 150 days; for passive testing, the samples were left unbiased, whilst for active testing, samples were exposed to two different stress signals: a 5 V DC and a 5 Vp 500 pulses per second biphasic signal. All samples were monitored over time using impedance spectroscopy combined with optical inspection. After the first two weeks of immersion, delamination spots were observed on the Pt tracks for both passive and actively tested samples. Despite the delamination spots, the unbiased samples maintained high impedances until the end of the study. For the actively stressed samples, two different failure mechanisms were observed which were signal related. DC stressed samples showed severe parylene cracking mainly due to the electrolysis of the condensed water. Biphasically stressed samples showed gradual Pt dissolution and migration. These results contribute to a better understanding of the failure mechanisms of Pt tracks in active implants and suggest that new testing paradigms may be necessary to fully assess the long-term reliability of these devices.